Question

An electric heater rated 1000 W and an electric geyser rated 2000 W are med for 4 hours daily. The energy consumed in 10 days (in kWh) is?

• A. 1200
• B. 12000
• C. 120
• D. 12

Answer 1

Answer:

C. 120

• Total power consumed = 1000 W + 2000 W = 3000 W = 3 kW

• Time of usage per day = 4 hours

• Total energy consumed per day = Power × Time = 3 kW × 4 hours = 12 kWh

• Total energy consumed in 10 days = 12kWh/day × 10 days = 120 kWh